using AWK

[RW]

On Mon, 17 Dec 2012 08:16:26 -0800
Devin Teske wrote:

> 
> On Dec 17, 2012, at 3:39 AM, Jack Mc Lauren wrote:
> 
> > Hi guys
> > 
> > How can I read a file which contains a number and assign that
> > number to a variable via awk programming? By the way, I want to use
> > this awk program in a shell script.
> > 
> > Thanks in advance
> 
> Try this:
> 
> awk -v file=/etc/ttys 'BEGIN { getline line <file; printf "First line
> from %s: %s\n", file, line }'
> 
Semms a bit complicated when you could set the awk variable directly
e.g.

$ echo 42 > /tmp/f
$ awk -v x=`cat /tmp/f`  'BEGIN{ print x+1 }'
43